I did my TDI Trimix course with David Polley on Koh Tao in 2012. Being a PADI instructor and a TDI Full Cave Diver before, I can really say that this course put me and my diving skills on a new level. Not only the knowledge about and usage of different breathing gases, but also all the other technical diving techniques that are part of this course. Since we went on a wreck diving expedition after the course, Dave conducted the course very thoughtfully, providing lots of tipps and tricks based on his year long experience and made sure that me and my equipment would be perfectly prepared for the expedition. Great job, Dave, thanks a lot!

I did Tech 40, 45, 50 cavern and intro cave with Dave Polley last year. Dave is a fantastic teacher, very professional and knowledgeable and trains with a relaxed and enthusiastic approach. It was a great experience pushing my diving into new areas, tech training also improved my recreational diving (trim, air consumption and planning) The cave and cavern trip too Khal Sok and Song Hong lakes was a definite highlight of my time in Thailand. Will be returning tooTech Diving Thailand and Dave for Sidemount in the near future.

I have done several technical diving courses with Tech Diving Thailand and I have to say the level of expertise of their instructors is unmatched in any other Tech School I have been with. I completed PADI RecTech to Tech 50 and TDI extended range, cavern, intro and full cave diver. I particularly enjoyed the cave courses, conducted at Khao Sok national park and Song Hong, a crystal clear sinkhole, with near limitless depth potential! If you are learning to tech dive do not trust your life to any other school Tech Diving Thailand are the best.

I did my Open Water with Dave when I was 54. I’m not a brilliant swimmer and I didn’t like having my face in the water let alone underwater so it was very challenging for me. However Dave proved to be a brilliant teacher and taught me the skills I needed. I’m his Mum so of course you’d expect me to be biased but actually I had no idea of his teaching ability. I also thought he might be a bit impatient with me but not at all. He was so professional. Being underwater was a fabulous experience. 

Getting into Cave Diving

Cave Diving with Tech Diving Thailand was awesome! I took the TDI Cavern and Intro to Cave courses in Khao Sok National Park. The food was great - a variety of Thai cuisine - the accommodation was simple and beautiful - floating bungalows - and the people were professional, safety oriented, standard conforming and super fun. Highly recommended!

Tech Diving Thailand is a great place to learn Technical Diving. I went from Tec 40 to Tech Instructor.. They offer many other courses like cave diving, equipment repair, gas blending, sidemount, rebreather and many more. Instructor trainer David Polley is very experienced and has a lot of diving knowledge that he happily shares. If your on Koh Tao don't bother Tech diving anywhere else, do it all at Tech Diving Thailand.

BSAC Sports Diver QualificationThank you Dave for completing my Sports Diver training qualification in record time! I had barely finished my Ocean diver course when Dave suggested that I pursue diving to the next level. In less than 2 months, we covered the entire diving theoretical content in 6 lectures, went for shore dives, sea dives, etc... And finally, passed the exam with no trouble at all!
Many thanks again!
Ben

I did everything up to trimix rebreather and Full Cave with Tech Diving Thailand. The environment is extremely professional and Dave is an excellent instructor. Courses are paired with expeditions to makes sure that it is not only a certification you are receiving when you do a course, but also the experience. I have looked at other tec schools and thailand and was disappointed with how short the courses take. At Tech Diving Thailand tec, once you have completed the course, you are welcome to continue diving with them to build up experience, which is much more valuable than a certification card. I am sure to come back to Tech Diving Thailand tech to one day to my tec instructor.

So I recently did my PADI Tec 40 & Tec 45 with Dave from Tech Diving Thailand, I have to be honest I was a little apprehensive going simply because I really didn't know what to expect. However, when I met Dave for the first I realised that it was going to be a good course. Daves knowledge is extensive but what struck me most was his passion & enthusiasm for this particular area of diving, throughout the theory sessions we would often digress into the background behind the theory and to watching videos of his many exploits diving on historical wrecks. The practical part of the course was not easy but this was a plus point, there was no coasting along through the skills, Dave made the emergency drills as realistic as possible but also ensured that my understanding of the skills was up to scratch. There was no real section of the course that I preferred as I found it all challenging and therefore enjoyable.